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Account for 128-bit integer operations in PPCCTRLoops

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We need to abort the formation of counter-register-based loops where there are
128-bit integer operations that might become function calls.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202192 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Hal Finkel
2014-02-25 20:51:50 +00:00
parent 724e528fc2
commit 15ac7dfb90
2 changed files with 42 additions and 6 deletions
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lib/Target/PowerPC/PPCCTRLoops.cpp
+11 -6
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@@ -187,6 +187,13 @@ bool PPCCTRLoops::runOnFunction(Function &F) {
return MadeChange;
}
static bool isLargeIntegerTy(bool Is32Bit, Type *Ty) {
if (IntegerType *ITy = dyn_cast<IntegerType>(Ty))
return ITy->getBitWidth() > (Is32Bit ? 32 : 64);
return false;
}
bool PPCCTRLoops::mightUseCTR(const Triple &TT, BasicBlock *BB) {
for (BasicBlock::iterator J = BB->begin(), JE = BB->end();
J != JE; ++J) {
@@ -353,13 +360,11 @@ bool PPCCTRLoops::mightUseCTR(const Triple &TT, BasicBlock *BB) {
CastInst *CI = cast<CastInst>(J);
if (CI->getSrcTy()->getScalarType()->isPPC_FP128Ty() ||
CI->getDestTy()->getScalarType()->isPPC_FP128Ty() ||
(TT.isArch32Bit() &&
(CI->getSrcTy()->getScalarType()->isIntegerTy(64) ||
CI->getDestTy()->getScalarType()->isIntegerTy(64))
))
isLargeIntegerTy(TT.isArch32Bit(), CI->getSrcTy()->getScalarType()) ||
isLargeIntegerTy(TT.isArch32Bit(), CI->getDestTy()->getScalarType()))
return true;
} else if (TT.isArch32Bit() &&
J->getType()->getScalarType()->isIntegerTy(64) &&
} else if (isLargeIntegerTy(TT.isArch32Bit(),
J->getType()->getScalarType()) &&
(J->getOpcode() == Instruction::UDiv ||
J->getOpcode() == Instruction::SDiv ||
J->getOpcode() == Instruction::URem ||